diff --git a/include/llvm/CodeGen/MachineInstr.h b/include/llvm/CodeGen/MachineInstr.h
index 421d753d10e..fb6e46040a7 100644
--- a/include/llvm/CodeGen/MachineInstr.h
+++ b/include/llvm/CodeGen/MachineInstr.h
@@ -347,7 +347,7 @@ public:
   //
   // Debugging support
   //
-  void print(std::ostream &OS, const TargetMachine &TM);
+  void print(std::ostream &OS, const TargetMachine &TM) const;
   void dump() const;
   friend std::ostream& operator<<(std::ostream& os, const MachineInstr& minstr);
 
diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp
index 91ee5123e19..ffd2e6e68f3 100644
--- a/lib/CodeGen/MachineInstr.cpp
+++ b/lib/CodeGen/MachineInstr.cpp
@@ -268,7 +268,7 @@ static void print(const MachineOperand &MO, std::ostream &OS,
     OS << ")";
 }
 
-void MachineInstr::print(std::ostream &OS, const TargetMachine &TM) {
+void MachineInstr::print(std::ostream &OS, const TargetMachine &TM) const {
   unsigned StartOp = 0;
 
    // Specialize printing if op#0 is definition